/**
* collectd - src/common.c
- * Copyright (C) 2005 Florian octo Forster
+ * Copyright (C) 2005,2006 Florian octo Forster
*
* This program is free software; you can redistribute it and/
* or modify it under the terms of the GNU General Public Li-
#include "common.h"
#include "utils_debug.h"
+#ifdef HAVE_MATH_H
+# include <math.h>
+#endif
+
extern int operating_mode;
#ifdef HAVE_LIBKSTAT
#endif
#ifdef HAVE_LIBRRD
+#if 0
static char *rra_def[] =
{
+ "RRA:AVERAGE:0.0:1:1500",
"RRA:AVERAGE:0.2:6:1500",
"RRA:AVERAGE:0.1:180:1680",
"RRA:AVERAGE:0.1:2160:1520",
+ "RRA:MIN:0.0:1:1500",
"RRA:MIN:0.2:6:1500",
"RRA:MIN:0.1:180:1680",
"RRA:MIN:0.1:2160:1520",
+ "RRA:MAX:0.0:1:1500",
"RRA:MAX:0.2:6:1500",
"RRA:MAX:0.1:180:1680",
"RRA:MAX:0.1:2160:1520",
NULL
};
-static int rra_num = 9;
+static int rra_num = 12;
+#endif
+
+static int rra_timespans[] =
+{
+ 3600,
+ 86400,
+ 604800,
+ 2678400,
+ 31622400,
+ 0
+};
+static int rra_timespans_num = 5;
+
+static char *rra_types[] =
+{
+ "AVERAGE",
+ "MIN",
+ "MAX",
+ NULL
+};
+static int rra_types_num = 3;
#endif /* HAVE_LIBRRD */
void sstrncpy (char *d, const char *s, int len)
}
#endif
+ssize_t sread (int fd, void *buf, size_t count)
+{
+ char *ptr;
+ size_t nleft;
+ ssize_t status;
+
+ ptr = (char *) buf;
+ nleft = count;
+
+ while (nleft > 0)
+ {
+ status = read (fd, (void *) ptr, nleft);
+
+ if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR)))
+ continue;
+
+ if (status < 0)
+ return (status);
+
+ if (status == 0)
+ {
+ DBG ("Received EOF from fd %i. "
+ "Closing fd and returning error.",
+ fd);
+ close (fd);
+ return (-1);
+ }
+
+ assert (nleft >= status);
+
+ nleft = nleft - status;
+ ptr = ptr + status;
+ }
+
+ return (0);
+}
+
+
+ssize_t swrite (int fd, const void *buf, size_t count)
+{
+ const char *ptr;
+ size_t nleft;
+ ssize_t status;
+
+ ptr = (const char *) buf;
+ nleft = count;
+
+ while (nleft > 0)
+ {
+ status = write (fd, (const void *) ptr, nleft);
+
+ if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR)))
+ continue;
+
+ if (status < 0)
+ return (status);
+
+ nleft = nleft - status;
+ ptr = ptr + status;
+ }
+
+ return (0);
+}
+
int strsplit (char *string, char **fields, size_t size)
{
size_t i;
return (0);
}
+int timeval_sub_timespec (struct timeval *tv0, struct timeval *tv1, struct timespec *ret)
+{
+ if ((tv0 == NULL) || (tv1 == NULL) || (ret == NULL))
+ return (-2);
+
+ if ((tv0->tv_sec < tv1->tv_sec)
+ || ((tv0->tv_sec == tv1->tv_sec) && (tv0->tv_usec < tv1->tv_usec)))
+ return (-1);
+
+ ret->tv_sec = tv0->tv_sec - tv1->tv_sec;
+ ret->tv_nsec = 1000 * ((long) (tv0->tv_usec - tv1->tv_usec));
+
+ if (ret->tv_nsec < 0)
+ {
+ assert (ret->tv_sec > 0);
+
+ ret->tv_nsec += 1000000000;
+ ret->tv_sec -= 1;
+ }
+
+ return (0);
+}
+
static int check_create_dir (const char *file_orig)
{
struct stat statbuf;
return (0);
}
+/* * * * *
+ * Magic *
+ * * * * */
+#if HAVE_LIBRRD
+static int rra_get (char ***ret)
+{
+ static char **rra_def = NULL;
+ static int rra_num = 0;
+
+ int rra_max = rra_timespans_num * rra_types_num;
+
+ int step;
+ int rows;
+ int span;
+
+ int cdp_num;
+ int cdp_len;
+ int i, j;
+
+ char buffer[64];
+
+ if ((rra_num != 0) && (rra_def != NULL))
+ {
+ *ret = rra_def;
+ return (rra_num);
+ }
+
+ if ((rra_def = (char **) malloc ((rra_max + 1) * sizeof (char *))) == NULL)
+ return (-1);
+ memset (rra_def, '\0', (rra_max + 1) * sizeof (char *));
+
+ step = atoi (COLLECTD_STEP);
+ rows = atoi (COLLECTD_ROWS);
+
+ if ((step <= 0) || (rows <= 0))
+ {
+ *ret = NULL;
+ return (-1);
+ }
+
+ cdp_len = 0;
+ for (i = 0; i < rra_timespans_num; i++)
+ {
+ span = rra_timespans[i];
+
+ if ((span / step) < rows)
+ continue;
+
+ if (cdp_len == 0)
+ cdp_len = 1;
+ else
+ cdp_len = (int) floor (((double) span) / ((double) (rows * step)));
+
+ cdp_num = (int) ceil (((double) span) / ((double) (cdp_len * step)));
+
+ for (j = 0; j < rra_types_num; j++)
+ {
+ if (rra_num >= rra_max)
+ break;
+
+ if (snprintf (buffer, sizeof(buffer), "RRA:%s:%3.1f:%u:%u",
+ rra_types[j], COLLECTD_XFF,
+ cdp_len, cdp_num) >= sizeof (buffer))
+ {
+ syslog (LOG_ERR, "rra_get: Buffer would have been truncated.");
+ continue;
+ }
+
+ rra_def[rra_num++] = sstrdup (buffer);
+ }
+ }
+
+#if COLLECT_DEBUG
+ DBG ("rra_num = %i", rra_num);
+ for (i = 0; i < rra_num; i++)
+ DBG (" %s", rra_def[i]);
+#endif
+
+ *ret = rra_def;
+ return (rra_num);
+}
+#endif /* HAVE_LIBRRD */
+
static int log_create_file (char *filename, char **ds_def, int ds_num)
{
FILE *log;
int i;
+ if (check_create_dir (filename))
+ return (-1);
+
log = fopen (filename, "w");
if (log == NULL)
{
/* The `%.*s' is needed because there is no null-byte behind
* the name. */
- fprintf(log, ",%.*s", (tmp - name), name);
+ fprintf(log, ",%.*s", (int) (tmp - name), name);
}
fprintf(log, "\n");
fclose(log);
strncpy (full_file, file, 1024);
tmp = full_file + strlen (full_file) - 4;
- assert (tmp > 0);
+ assert ((tmp != NULL) && (tmp > full_file));
/* Change the filename for logfiles. */
if (strncmp (tmp, ".rrd", 4) == 0)
{
char **argv;
int argc;
+ char **rra_def;
+ int rra_num;
int i, j;
int status = 0;
if (check_create_dir (filename))
return (-1);
+ if ((rra_num = rra_get (&rra_def)) < 1)
+ {
+ syslog (LOG_ERR, "rra_create failed: Could not calculate RRAs");
+ return (-1);
+ }
+
argc = ds_num + rra_num + 4;
if ((argv = (char **) malloc (sizeof (char *) * (argc + 1))) == NULL)
argv[0] = "create";
argv[1] = filename;
argv[2] = "-s";
- argv[3] = "10";
+ argv[3] = COLLECTD_STEP;
j = 4;
for (i = 0; i < ds_num; i++)
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